RockWoofFound alongside
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
23 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
10 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
3 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
3 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
3 sites
Garnet
Mohs 6.5–7.5. Usually deep red, round many-faced crystals. Mindat
1 site
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Ashland County (9) · Iron County (5) · Florence County (4) · Jackson County (3) · Price County (1) · Lincoln County (1)
Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Ritchie Creek Propsect | Copper | Bornite, Chalcocite, Chalcopyrite, Electrum, Gold, Magnetite, Pyrite, Pyrrhotite, Tennantite, Tetrahedrite | Prospect | 45.488, -90.057 |
| Mineral Lake Cu-Ni Prospect | Nickel, Copper | Bornite, Chalcopyrite, Cubanite, Marcasite, Niccolite, Pentlandite, Pyrrhotite | Occurrence | 46.299, -90.808 |
| Hawk Propsect | Zinc, Copper | Chalcocite, Chalcopyrite, Covellite, Electrum, Magnetite, Pyrite, Pyrrhotite, Sphalerite, Tetrahedrite | Prospect | 45.448, -89.755 |
| Berkshire Mine | Iron | Goethite, Hematite, Magnetite | Past Producer | 46.301, -90.624 |
| Commonwealth Group | Iron | Goethite, Hematite, Magnetite | Past Producer | 45.898, -88.230 |
| Ernst Mine | Iron | Goethite, Hematite, Magnetite | Past Producer | 45.909, -88.238 |
| Florence Mine | Iron | Goethite, Hematite, Magnetite | Past Producer | 45.926, -88.263 |
| Larson Exploration Prospect | Iron | Goethite, Hematite, Magnetite | Occurrence | 45.907, -88.341 |
| Black River Falls | Iron | Hematite, Magnetite | Past Producer | 44.293, -90.725 |
| Pine Lake Taconite Deposit | Iron | Hematite, Magnetite | Prospect | 46.264, -90.100 |
| Michigan Mine | Iron | Hematite, Magnetite | Unknown | 46.100, -90.333 |
| West Gogebic Taconite Deposit | Iron | Hematite, Magnetite | Past Producer | 46.297, -90.653 |
| Moose Lake | Iron | Magnetite | Unknown | 46.217, -90.233 |
| Butternut Exploration | Iron | Magnetite | Unknown | 46.017, -90.517 |
| Mercer District | Iron | Magnetite | Unknown | 46.167, -90.083 |
| Ford Lucas | Iron | Magnetite | Unknown | 46.050, -90.400 |
| South Butternut Deposit | Iron | — | Prospect | 46.009, -90.510 |
| Pine Lake Taconite Deposit | Iron | — | Prospect | 46.264, -90.100 |
| Gogebic Deposit | Iron | — | Prospect | 47.460, -92.959 |
| Penokee Deposit | Iron | — | Prospect | 46.297, -90.653 |
| Tilden Mound Deposit | Iron | — | Past Producer | 44.308, -90.830 |
| Agenda Deposit | Iron | — | Prospect | 46.107, -90.336 |
| Black River Falls | Iron | — | Past Producer | 44.293, -90.725 |
Back to Rockhounding in Wisconsin.
How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.
Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.
Updated